2 Bacula® - The Network Backup Solution
4 Copyright (C) 2007-2011 Free Software Foundation Europe e.V.
6 The main author of Bacula is Kern Sibbald, with contributions from
7 many others, a complete list can be found in the file AUTHORS.
8 This program is Free Software; you can redistribute it and/or
9 modify it under the terms of version three of the GNU Affero General Public
10 License as published by the Free Software Foundation and included
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU Affero General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 Bacula® is a registered trademark of Kern Sibbald.
24 The licensor of Bacula is the Free Software Foundation Europe
25 (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
26 Switzerland, email:ftf@fsfeurope.org.
30 * Kern Sibbald, September MMVII
32 * This is tricky code, especially when writing from scratch. Fortunately,
33 * a non-copyrighted version of mkdir was available to consult.
35 * ***FIXME*** the mkpath code could be significantly optimized by
36 * walking up the path chain from the bottom until it either gets
37 * to the top or finds an existing directory then walk back down
38 * creating the path components. Currently, it always starts at
39 * the top, which can be rather inefficient for long path names.
47 typedef struct PrivateCurDir {
52 /* Initialize the path hash table */
53 static bool path_list_init(JCR *jcr)
56 jcr->path_list = (htable *)malloc(sizeof(htable));
58 /* Hard to know in advance how many directories will
59 * be stored in this hash
61 jcr->path_list->init(elt, &elt->link, 10000);
65 /* Add a path to the hash when we create a directory
66 * with the replace=NEVER option
68 bool path_list_add(JCR *jcr, uint32_t len, char *fname)
73 if (!jcr->path_list) {
77 /* we store CurDir, fname in the same chunk */
78 item = (CurDir *)jcr->path_list->hash_malloc(sizeof(CurDir)+len+1);
80 memset(item, 0, sizeof(CurDir));
81 memcpy(item->fname, fname, len+1);
83 jcr->path_list->insert(item->fname, item);
85 Dmsg1(dbglvl, "add fname=<%s>\n", fname);
89 void free_path_list(JCR *jcr)
92 jcr->path_list->destroy();
94 jcr->path_list = NULL;
98 bool path_list_lookup(JCR *jcr, char *fname)
103 if (!jcr->path_list) {
107 /* Strip trailing / */
108 int len = strlen(fname);
114 if (fname[len] == '/') { /* strip any trailing slash */
118 CurDir *temp = (CurDir *)jcr->path_list->lookup(fname);
123 Dmsg2(dbglvl, "lookup <%s> %s\n", fname, found?"ok":"not ok");
125 fname[len] = bkp; /* restore last / */
129 static bool makedir(JCR *jcr, char *path, mode_t mode, int *created)
133 if (mkdir(path, mode) != 0) {
136 if (stat(path, &statp) != 0) {
137 Jmsg2(jcr, M_ERROR, 0, _("Cannot create directory %s: ERR=%s\n"),
138 path, be.bstrerror());
140 } else if (!S_ISDIR(statp.st_mode)) {
141 Jmsg1(jcr, M_ERROR, 0, _("%s exists but is not a directory.\n"), path);
144 return true; /* directory exists */
147 if (jcr->keep_path_list) {
148 /* When replace=NEVER, we keep track of all directories newly created */
149 path_list_add(jcr, strlen(path), path);
156 static void set_own_mod(ATTR *attr, char *path, uid_t owner, gid_t group, mode_t mode)
158 if (chown(path, owner, group) != 0 && attr->uid == 0
164 Jmsg2(attr->jcr, M_WARNING, 0, _("Cannot change owner and/or group of %s: ERR=%s\n"),
165 path, be.bstrerror());
167 if (chmod(path, mode) != 0 && attr->uid == 0) {
169 Jmsg2(attr->jcr, M_WARNING, 0, _("Cannot change permissions of %s: ERR=%s\n"),
170 path, be.bstrerror());
175 * mode is the mode bits to use in creating a new directory
177 * parent_mode are the parent's modes if we need to create parent
180 * owner and group are to set on any created dirs
182 * keep_dir_modes if set means don't change mode bits if dir exists
184 bool makepath(ATTR *attr, const char *apath, mode_t mode, mode_t parent_mode,
185 uid_t owner, gid_t group, int keep_dir_modes)
189 char *path = (char *)apath;
197 int max_dirs = (int)sizeof(new_dir);
198 JCR *jcr = attr->jcr;
200 if (stat(path, &statp) == 0) { /* Does dir exist? */
201 if (!S_ISDIR(statp.st_mode)) {
202 Jmsg1(jcr, M_ERROR, 0, _("%s exists but is not a directory.\n"), path);
205 /* Full path exists */
206 if (keep_dir_modes) {
209 set_own_mod(attr, path, owner, group, mode);
215 path = (char *)alloca(len+1);
216 bstrncpy(path, apath, len+1);
217 strip_trailing_slashes(path);
219 * Now for one of the complexities. If we are not running as root,
220 * then if the parent_mode does not have wx user perms, or we are
221 * setting the userid or group, and the parent_mode has setuid, setgid,
222 * or sticky bits, we must create the dir with open permissions, then
223 * go back and patch all the dirs up with the correct perms.
224 * Solution, set everything to 0777, then go back and reset them at the
229 #if defined(HAVE_WIN32)
230 /* Validate drive letter */
231 if (path[1] == ':') {
232 char drive[4] = "X:\\";
236 UINT drive_type = GetDriveType(drive);
238 if (drive_type == DRIVE_UNKNOWN || drive_type == DRIVE_NO_ROOT_DIR) {
239 Jmsg1(jcr, M_ERROR, 0, _("%c: is not a valid drive.\n"), path[0]);
243 if (path[2] == '\0') { /* attempt to create a drive */
245 goto bail_out; /* OK, it is already there */
256 /* Skip leading slash(es) */
257 while (IsPathSeparator(*p)) {
260 while ((p = first_path_separator(p))) {
264 if (!makedir(jcr, path, tmode, &created)) {
267 if (ndir < max_dirs) {
268 new_dir[ndir++] = created;
271 while (IsPathSeparator(*p)) {
275 /* Create final component */
276 if (!makedir(jcr, path, tmode, &created)) {
279 if (ndir < max_dirs) {
280 new_dir[ndir++] = created;
282 if (ndir >= max_dirs) {
283 Jmsg0(jcr, M_WARNING, 0, _("Too many subdirectories. Some permissions not reset.\n"));
286 /* Now set the proper owner and modes */
287 #if defined(HAVE_WIN32)
288 if (path[1] == ':') {
296 /* Skip leading slash(es) */
297 while (IsPathSeparator(*p)) {
300 while ((p = first_path_separator(p))) {
304 if (i < ndir && new_dir[i++] && !keep_dir_modes) {
305 set_own_mod(attr, path, owner, group, parent_mode);
308 while (IsPathSeparator(*p)) {
313 /* Set for final component */
314 if (i < ndir && new_dir[i++]) {
315 set_own_mod(attr, path, owner, group, mode);